Abyss Odyssey

Abyss Odyssey is a platform action-adventure game developed by ACE Team and published by Atlus.The game's plot follows a set of heroes who fight to reach a warlock whose dreams are infecting reality. Abyss Odyssey combines elements from multiple video game genres and has a unique art style based on the Art Nouveau movement. It received mostly positive reviews from critics who praised its atmosphere but criticized some aspects of gameplay.

Go to --> %USERPROFILE%\Documents\My Games\AbyssOdyssey\AOGame\Config and open pen AOEngine.ini
Look for [Engine.LocalPlayer]
AspectRatioAxisConstraint=AspectRatio_MaintainXFOV and change it to AspectRatioAxisConstraint=AspectRatio_MaintainYFOV

Ultra/Super-Wide (21:9/32:9) Specific Solution & Issues

Problem here is the HUD is only half visible.

Go to --> %USERPROFILE%\Documents\My Games\AbyssOdyssey\AOGame\Config and open pen AOEngine.ini
Look for [Engine.LocalPlayer]
AspectRatioAxisConstraint=AspectRatio_MaintainXFOV and change it to AspectRatioAxisConstraint=AspectRatio_MaintainYFOV

To change the Resolution --> C:\Users\...\Documents\My Games\AbyssOdyssey\AOGame\Config and open AOSystemSettings.ini